<template>
    <div class="star" :class='"star-"+size'>
        <span class="star-item" v-for='(sc,index) in starClasses' :class='sc' :key='index'></span>
    </div>
</template>

<script>
    const CLASS_ON='on'
    const CLASS_HALF='half'
    const CLASS_OFF='off'
    export default {
        props:{
           score:Number,
           size:Number
        },
        computed:{
            starClasses(){
                const {score} = this;
                const scs = [];
                const scoreInteger = Math.floor(score);
                for(let i=0;i<scoreInteger;i++){
                  scs.push(CLASS_ON)
                }
                if((score-scoreInteger)*10>=5){
                  scs.push(CLASS_HALF)  
                }
                
                while(scs.length<5){
                  scs.push(CLASS_OFF)    
                }
 
                return scs
            }
        }
    }
</script>

<style lang='stylus' rel='stylesheet/stylus'>
                        @import '../../common/stylus/mixins.styl'
                        .star 
                            float left
                            font-size 0
                            .star-item
                              display inline-block
                              background-repeat no-repeat
                            &.star-48
                              .star-item
                                width 20px
                                height 20px
                                margin-right 22px
                                background-size 20px 20px
                                &:last-child
                                  margin-right: 0
                                &.on
                                  bg-image('./images/stars/star48_on')
                                &.half
                                  bg-image('./images/stars/star48_half')
                                &.off
                                  bg-image('./images/stars/star48_off')
                            &.star-36
                              .star-item
                                width 15px
                                height 15px
                                margin-right 6px
                                background-size 15px 15px
                                &:last-child
                                  margin-right 0
                                &.on
                                  bg-image('./images/stars/star36_on')
                                &.half
                                  bg-image('./images/stars/star36_half')
                                &.off
                                  bg-image('./images/stars/star36_off')
                            &.star-24
                              .star-item
                                width 10px
                                height 10px
                                margin-right 3px
                                background-size 10px 10px
                                &:last-child
                                  margin-right 0
                                &.on
                                  bg-image('./images/stars/star24_on')
                                &.half
                                  bg-image('./images/stars/star24_half')
                                &.off
                                  bg-image('./images/stars/star24_off')
</style>